IXUS 100 IS (Europe) / PowerShot SD780 IS - Porting Thread

wasabi1023

Is the modified udumper working on the SD780? I'd like to try it on my 1.00B camera.

HarpoMa

Never tried. But you can try it and tell us. 😀

wasabi1023

I tried the diskboot.bin from https://chdk.setepontos.com/d/4095/18 and couldn't get anything.

I'm not sure how universal these modified udumpers are, or how easily they can be adapted to different cameras.

reyalp

We've figured out the diskboot code, but the udumper code itself probably needs adjustment.

whatever changes worked in this thread https://chdk.setepontos.com/d/4310/4 may be applicable.

HarpoMa

@reyalp - heads up
New palette seems to be required for the SD780 - I've matched the colors somewhat to name but any suggestions other then "seem to pick the right #"?

Also note that SCREEN_COLOR from the gui_bench.c will need to be moved because 0xF7 is white for me. 🙁

-----

#elif CAM_BITMAP_PALETTE==4
#define COLOR_TRANSPARENT 0x00
#define COLOR_WHITE 0x01 //lots to pick from...
#define COLOR_RED 0x75
#define COLOR_GREY 0x15
#define COLOR_GREEN 0xC3
#define COLOR_BLUE_LT 0x7B
#define COLOR_BLUE 0x8C
#define COLOR_YELLOW 0x52
#define COLOR_BLACK 0xFF
#define COLOR_BG 0x44
#define COLOR_FG COLOR_WHITE
#define COLOR_SELECTED_BG COLOR_RED
#define COLOR_SELECTED_FG COLOR_WHITE
#define COLOR_ALT_BG 0xD4
#define COLOR_SPLASH_RED 0x75
#define COLOR_SPLASH_PINK 0x60
#define COLOR_SPLASH_GREY 0x15
#define SCREEN_COLOR COLOR_SPLASH_GREY

reyalp

HarpoMa
@reyalp - heads up
New palette seems to be required for the SD780 - I've matched the colors somewhat to name but any suggestions other then "seem to pick the right #"?

Not really. If you (or one of the other testers) has another CHDK camera, you can try to find the best match by comparing them side by side. Really it doesn't matter much as long as all the displays are legible.

Also note that SCREEN_COLOR from the gui_bench.c will need to be moved because 0xF7 is white for me. 🙁

Everything that uses hard coded color constants should be centralized in the palette ifdefs. Note that SCREEN_COLOR is defined separately in multiple files, and the games have several other hard coded defines 😉

I apparently missed a bunch of stuff when I did the SD990

Jestik

hm.. i tried to make dng and irfan says that size of picture is only
1988 x 1488 Pixels (2.96 MPixels) (4:3)
i guess it's not ok.

fe50

Jestik
hm.. i tried to make dng and irfan says that size of picture is only
1988 x 1488 Pixels (2.96 MPixels) (4:3)
i guess it's not ok.

I guess your guess is wrong... 😉

fe50

Derandi
They have about 2 megapixels, compared to 8 megapixels in the jpeg files. I do not think it's a probem of "Raw Photo Processor",

Many viewers / image processing tools shows either 1/2 the image or only a small thumbnail of RAW files by default due to performance/faster response...e.g. in XNView: "Camera RAW: half size / full size / thumbnail only"

--> There's also such a setting for RAW images in Irfanview !

JustMe2

Do we gain any more details with RAW images besides uncompressed images (e.g. more bit depth and so on)?

mstawick

deleted

Jestik

2 fe50
mmmkay 😀
You are defenitly right! I've found options. Now it's 3976 x 2976. Thanks

2 JustMe2

Irfan shows that picture has 24 bit (hm my Nikon's nef has 12.. ;( )
There is lot of noise in dng. But Photoshop+Imegenomic Noiseware is much better than antinoise algorithm in ixus100

mstawick

Jestik
There is lot of noise in dng. But Photoshop+Imegenomic Noiseware is much better than antinoise algorithm in ixus100

Are you able to open DNG from ixus 100 in photoshop? Does it 'just' work, or do you use some plugin for this?

Jestik

No, unfortunatly i can't do it.
First i open dng in irfanview --> Save as tiff --> Open in PS (or open as camera raw in ps)

JustMe2

@Jestik: Thank you for your comparison.

You could test whether DNG has really more information (more bits) when you shoot in a bright spot with a dark area. When you lighten up that area (adjust contrast or something) there should be a slight difference.

HarpoMa

The raw is only 12bit so I imagine the DNG has to be similar. 😀

Jestik

hm.. i always thought that RAW can be 12 or 14 bit. But, ok, it doesn't matter 😀
i think in cameras with such small sensor RAW can't be panacea, but it something really helps when i need to correct shadows and highlight.
Anyway many thanks to HapoMa.

HarpoMa

It can be all sorts but alas the sensor only gives 12 bit (vs 10 bit for earlier SDs)

Harpo

mstawick

I have just noticed that all of my DNG photos have a black stripe, few-pixels wide on one side. Is it just my camera, or do you guys also get it? On jpg there is no stripe.

Jestik

2 mstawick

on the left side of the picture? If so, then i have it

mstawick

Jestik
on the left side of the picture? If so, then i have it

Yes, exactly.

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